Asymmetric bacteria are bacteria that, as their name implies, undergo "non-symmetrical" life cycles. This especially includes those that differentiate temporally, such as prosthecate bacteria.[1]
References
^Madigan, Michael T., Martinko, John M. (2006). Brock Biology of Microorganisms (11th ed. ed.). Pearson Prentice Hall. ISBN 0-13-196893-9.